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Fire door has metal gap closure and smoke seal between door and wall for protection of niche electrical system
Fire door has metal gap closure and smoke seal between door and wall for protection of niche electrical system
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机译:防火门在门与墙壁之间具有金属缝隙封闭和烟熏密封,以保护利基电气系统
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摘要
A fire door (1) covers an aperture (3) in a wall (2) to a niche or chamber with an electrical system (4) and protects it from ambient (5) smoke and fire. The one-piece door is separated from the wall by esp. a fire-resistant element (8) and a smoke seal (7). The element is fabricated from laminated fire-resistant material with a coating of paint, plastic or metal.
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